When experimental data describe a 2-dimensional curve which is more complex
than can be fit by a 6th degree curve-fit estimate, Excel is still capable of
filling the area with colored pixels when using the Area chart wizard. The
area of those pixels is exactly what is needed: How can a person accurately
determine that area?

Maybe this?

http://people.stfx.ca/bliengme/Excel...UnderCurve.htm

--
Kind regards,

Niek Otten
Microsoft MVP - Excel

"Zurich" <(E-Mail Removed)> wrote in message
news:C4D47B0E-5ADE-48B5-9A28-(E-Mail Removed)...
> When experimental data describe a 2-dimensional curve which is more
> complex
> than can be fit by a 6th degree curve-fit estimate, Excel is still capable
> of
> filling the area with colored pixels when using the Area chart wizard. The
> area of those pixels is exactly what is needed: How can a person
> accurately
> determine that area?